Home / 516,522,012.46-774,783,579.92-128,344,842.81

Finding the Fourth Proportional to 516,522,012.46, 774,783,579.92 and 128,344,842.81

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Solution

The fourth proportional to 516,522,012.46, 774,783,579.92 and 128,344,842.81 is: 192,517,403.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,522,012.46 : 774,783,579.92 = 128,344,842.81 : x
  2. Step 2: Convert to fraction form
    516,522,012.46/774,783,579.92 = 128,344,842.81/x
  3. Step 3: Cross multiply
    516,522,012.46x = 774,783,579.92 × 128,344,842.81
  4. Step 4: Simplify right side
    516,522,012.46x = 99,439,476,775,959,744
  5. Step 5: Solve for x
    x = 99,439,476,775,959,744/516,522,012.46
  6. Step 6: Final answer
    x = 192,517,403.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.